diff --git a/chrony-4.4.tar.gz b/chrony-4.4.tar.gz
deleted file mode 100644
index d019e6b..0000000
--- a/chrony-4.4.tar.gz
+++ /dev/null
@@ -1,3 +0,0 @@
-version https://git-lfs.github.com/spec/v1
-oid sha256:eafb07e6daf92b142200f478856dfed6efc9ea2d146eeded5edcb09b93127088
-size 612094
diff --git a/chrony-4.4.tar.gz.sig b/chrony-4.4.tar.gz.sig
deleted file mode 100644
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+++ /dev/null
@@ -1,16 +0,0 @@
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diff --git a/chrony-4.5.tar.gz b/chrony-4.5.tar.gz
new file mode 100644
index 0000000..fb3348f
--- /dev/null
+++ b/chrony-4.5.tar.gz
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:19fe1d9f4664d445a69a96c71e8fdb60bcd8df24c73d1386e02287f7366ad422
+size 620287
diff --git a/chrony-4.5.tar.gz.sig b/chrony-4.5.tar.gz.sig
new file mode 100644
index 0000000..001cba2
--- /dev/null
+++ b/chrony-4.5.tar.gz.sig
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diff --git a/chrony-config.patch b/chrony-config.patch
index d5e07d0..b01d484 100644
--- a/chrony-config.patch
+++ b/chrony-config.patch
@@ -1,14 +1,12 @@
-Index: chrony-4.0/examples/chrony.conf.example3
-===================================================================
---- chrony-4.0.orig/examples/chrony.conf.example3
-+++ chrony-4.0/examples/chrony.conf.example3
+--- examples/chrony.conf.example3.orig
++++ examples/chrony.conf.example3
 @@ -27,12 +27,38 @@
  # you can access at http://support.ntp.org/bin/view/Servers/WebHome or
  # you can use servers from the pool.ntp.org project.
  
--! server foo.example.net iburst
--! server bar.example.net iburst
--! server baz.example.net iburst
+-! server ntp1.example.net iburst
+-! server ntp2.example.net iburst
+-! server ntp3.example.net iburst
 -
  ! pool pool.ntp.org iburst
   
diff --git a/chrony-htonl.patch b/chrony-htonl.patch
index deacacb..b8e7d39 100644
--- a/chrony-htonl.patch
+++ b/chrony-htonl.patch
@@ -1,6 +1,6 @@
 --- test/unit/util.c.orig
 +++ test/unit/util.c
-@@ -561,7 +561,7 @@ test_unit(void)
+@@ -602,7 +602,7 @@ test_unit(void)
  #else
    TEST_CHECK(tspec.tv_sec_high == htonl(TV_NOHIGHSEC));
  #endif
diff --git a/chrony.changes b/chrony.changes
index 715fd2b..e94e615 100644
--- a/chrony.changes
+++ b/chrony.changes
@@ -1,3 +1,13 @@
+-------------------------------------------------------------------
+Mon Jan 15 14:12:31 UTC 2024 - Reinhard Max <max@suse.com>
+
+- Update to version 4.5:
+  * Add support for AES-GCM-SIV in GnuTLS
+  * Add support for corrections from PTP transparent clocks
+  * Add support for systemd socket activation
+  * Fix presend in interleaved mode
+  * Fix reloading of modified sources from sourcedir
+
 -------------------------------------------------------------------
 Fri Sep  1 14:05:34 UTC 2023 - Fabian Vogt <fvogt@suse.com>
 
diff --git a/chrony.spec b/chrony.spec
index 4cb597c..bef06e9 100644
--- a/chrony.spec
+++ b/chrony.spec
@@ -1,7 +1,7 @@
 #
 # spec file for package chrony
 #
-# Copyright (c) 2023 SUSE LLC
+# Copyright (c) 2024 SUSE LLC
 #
 # All modifications and additions to the file contributed by third parties
 # remain the property of their copyright owners, unless otherwise agreed
@@ -33,7 +33,7 @@
 %bcond_without testsuite
 
 %define _systemdutildir %(pkg-config --variable systemdutildir systemd)
-%global clknetsim_ver ef2a7a9
+%global clknetsim_ver 5d1dc05
 #Compat macro for new _fillupdir macro introduced in Nov 2017
 %if ! %{defined _fillupdir}
   %define _fillupdir %{_localstatedir}/adm/fillup-templates
@@ -41,7 +41,7 @@
 %define chrony_helper %{_libexecdir}/chrony/helper
 %define chrony_rundir %{_rundir}/%{name}
 Name:           chrony
-Version:        4.4
+Version:        4.5
 Release:        0
 Summary:        System Clock Synchronization Client and Server
 License:        GPL-2.0-only
@@ -175,7 +175,7 @@ e.g. because the servers will be set via DHCP.
 
 %prep
 %setup -q -a 10
-%patch0 -p1
+%patch0
 %patch1
 %patch2 -p1
 %patch3
diff --git a/clknetsim-5d1dc05.tar.gz b/clknetsim-5d1dc05.tar.gz
new file mode 100644
index 0000000..6abbd73
--- /dev/null
+++ b/clknetsim-5d1dc05.tar.gz
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:26ffb69047e1839ec7bdd92bc55140a31edb2d8b6d97fbb6f19e1c9ccf601d99
+size 51356